Round, or tondo, frames housing mirrors or devotional images were a popular type of domestic furnishing in Tuscany in the fifteenth and sixteenth centuries. This example bears the coat of arms of the Cinuzzi family of Siena and is almost certainly of Sienese manufacture. It may have been designed by the sculptor Giovanni di Stefano, son of the famous painter Sassetta (whose work is on display in Gallery 956). The present mirror is not original.